Siemens Aktiengesellschaft

Klaus Kotten

Peter Krummrich

Erich Gottwald

Christoph Glingener

An apparatus is provided for compensating for polarization mode dispersion which is caused during transmission of a light wave via an optical waveguide, to an optical communication network having such an apparatus, and a method for compensating for polarization mode dispersion which is caused during transmission of a light wave via an optical waveguide is also provided. The apparatus has at least one first and one second polarization mode dispersion compensation device, and a control device which controls at least the first polarization mode dispersion compensation device, with the light wave being supplied first of all to the first compensation device, which at least partially carries out polarization mode dispersion compensation on the supplied light wave, and with the light wave which is emitted from the first compensation device then being supplied to the second compensation device, which carries out further polarization mode dispersion compensation on the light wave, wherein the apparatus has a PMD detection device, which provides information relating to the polarization mode dispersion of the light wave that is emitted from the first compensation device, and the first compensation device is controlled by the control device using the information relating to the polarization mode dispersion of the light wave that is emitted from the first compensation device.

Control concept for a multistage polarization mode dispersion compensator

A system and method for measuring and compensating for the polarization mode dispersion of first and higher orders for a transmitted optical signal are described wherein the propagation time difference, caused from polarization mode dispersion, between orthogonally polarized signals of the transmitted optical signal can be determined very precisely, and can be compensated for, even above a delay of a bit duration of the data signal.

System and method for measuring and compensating for the polarization mode dispersion of an optical signal

In a circuit arrangement for dispersion compensation in optical transmission systems by means of an optical filter, an optical transverse filter is provided as a negative dispersion filter, and which has a series of directional couplers which respectively follow one another at a spacing of .tau./2 and are operated as splitters. A series of directional couplers are provided which likewise follow one another at a spacing of .tau./2 and are operated as combiners, the second output of each directional coupler of the directional couplers operated as splitters leading in each case to the second input of the respectively corresponding directional coupler operated as a combiner.

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Munich, Germany

Klaus Kotten